Battery Maintenance; Maintenance Schedule - Thermo Scientific TSX Series Installation And Operation Manual

Battery Maintenance

The freezer monitors the voltage status of the battery daily
and indicates a battery failure via visual and auditory warning.
Replace the battery as indicated by system warnings or as
necessary per individual status evaluation. Check the battery
connections regularly. Although not required, annual battery
replacement is recommended to ensure proper battery status
in the event of power failure. Be sure to reset the battery
replacement timer via the user interface whenever the battery
is replaced.
For safety, it is recommended to power off the unit and
disconnect it from the power source before replacing the
battery. Battery terminals are color coded red and black.
Ensure the corresponding colored wires are connected to the
matching color terminals on the battery. The battery is
installed with terminals oriented toward the condenser
compartment or hinge side of the freezer's outer door
(see below). With proper installation, the red wire should be
connected to the rear battery (positive) terminal and the black
wire to the front (common) terminal.
Failure to properly connect the battery can damage electrical
components and potentially hinder normal operation of the
freezer. Consult a certified service technician if there are any
questions or concerns about battery maintenance.
Battery Specification
Rechargeable sealed lead-acid battery, 12 V, 7.0 Amp Hr.
Replacement batteries can be purchased directly from
Thermo Fisher Scientific (part number 400159).
Figure 47. Battery Specification
Ultra Low Temperature Freezers

Maintenance Schedule

Regular maintenance is important to keep the unit working
properly. Inspect/Clean as directed in the table below.
Item Interval
Defrost the freezer once per year or
Defrost whenever the ice build exceeds
3/8 inches (0.95 cm).
Periodically check the gaskets around
the door for punctures or tears.
Gasket
Periodically clean the ice-build up
around the gasket.
Clean the condenser filter(s) every 2 to
Filter
3 months.
Clean every 6 months; more often if the
Condenser
laboratory area is dusty.
Replace the battery as indicated by
system warnings or as necessary per
individual status evaluation. Check the
battery connections regularly.
Battery
Although not required, annual battery
replacement is recommended to
ensure proper battery status in the
event of power failure.
Undercarriage Every 2 to 3 months, clean any dust or
lighting debris that has accumulated on the
(optional) surface of the lighting housing.
Maintenance and Troubleshooting | 33